FYI - we plan for this to be fixed in 2.6.2, preferably by fixing
the version machinery to require the "join / leave versions"
permission (which is assigned only to managers by default.

It will be interesting to find out how this can be accomplished. To use
a version, you have to specify the version at the time of opening the
database. Before opening the database, the application has no access to
user accounts, let alone security settings.